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<P>
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<a href="http://www.nagios.org"><img src="images/logofullsize.png" border=0 alt="Nagios"></a>
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</P>
<P class="Title">
Version 2.0 Documentation
</p>
<P class="PageTitle">
Table of Contents
</P>

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<P>
<strong>About</strong>
<ul>
<a href="about.html#whatis"><strong>What is Nagios?</strong></a><br>
<a href="about.html#requirements"><strong>System requirements</strong></a><br>
<a href="about.html#licensing"><strong>Licensing</strong></a><br>
<a href="about.html#downloading"><strong>Downloading the latest version</strong></a><br>
<a href="about.html#othermonitors"><strong>Other monitoring utilities</strong></a><br>
</ul>

<strong>Release Notes</strong>
<ul>
<a href="whatsnew.html"><font color="red"><strong>What's new in this version</strong></font></a><br>
<a href="whatsnew.html#changelog"><strong>Change log</strong></a><br>
</ul>

<strong>Support</strong>
<ul>
<a href="http://www.nagios.org/support/"><strong>Self-service and commercial support</strong></a><br>
</ul>

<strong>Getting Started</strong>
<ul>
<a href="beginners.html"><strong>Advice for beginners</strong></a><br>
</ul>

<strong>Installing Nagios</strong>
<ul>
<a href="installing.html"><strong>Compiling and installing Nagios</strong></a><br>
<a href="installweb.html"><strong>Setting up the web interface</strong></a><br>
</ul>

<strong>Configuring Nagios</strong>
<ul>
<a href="config.html"><strong>Configuration overview</strong></a><br>
<a href="configmain.html"><strong>Main configuration file options</strong></a><br>
<a href="configobject.html"><strong>Object configuration file options</strong></a><br>
<a href="configcgi.html"><strong>CGI configuration file options</strong></a><br>
<a href="cgiauth.html"><strong>Configuring authorization for the CGIs</strong></strong></a><br>
</ul>

<strong>Running Nagios</strong>
<ul>
<a href="verifyconfig.html"><strong>Verifying the configuration</strong></a><br>
<a href="starting.html"><strong>Starting Nagios</strong></a><br>
<a href="stoprestart.html"><strong>Stopping and restarting Nagios</strong></a><br>
</ul>

<strong>Nagios Plugins</strong>
<ul>
<a href="plugins.html"><strong>Standard plugins</strong></a><br>
<a href="plugins.html#howto"><strong>Writing your own plugins</strong></a><br>
</ul>

<strong>Nagios Addons</strong>
<ul>
<table border="0" cellspacing="0" cellpadding="0" class="Default">
<tr>
<td><a href="addons.html#nrpe"><strong>NRPE</strong></a></td>
<td>- Daemon and plugin for executing plugins on remote hosts</td>
</tr>
<tr>
<td><a href="addons.html#nsca"><strong>NSCA</strong></a></td>
<td>- Daemon and client program for sending passive check results across the network</td>
</tr>
</table>
</ul>

<strong>Theory Of Operation</strong>
<ul>
<a href="networkreachability.html"><strong>Determing status and reachability of network hosts</strong></a><br>
<a href="networkoutages.html"><strong>Network outages</strong></a><br>
<a href="notifications.html"><strong>Notifications</strong></a><br>
<a href="plugintheory.html"><strong>Plugin theory</strong></a><br>
<a href="checkscheduling.html"><strong>Service check scheduling</strong></a><br>
<a href="statetypes.html"><strong>State types</strong></a><br>
<a href="timeperiods.html"><strong>Time periods</strong></a><br>
</ul>

<strong>Advanced Topics</strong>
<ul>
<a href="eventhandlers.html"><strong>Event handlers</strong></a><br>
<a href="extcommands.html"><strong>External commands</strong></a><br>
<a href="indirectchecks.html"><strong>Indirect host and service checks</strong></a><br>
<a href="passivechecks.html"><strong>Passive service checks</strong></a><br>
<a href="volatileservices.html"><strong>Volatile services</strong></a><br>
<a href="freshness.html"><strong>Service and host result freshness checks</strong></a><br>
<a href="distributed.html"><strong>Distributed monitoring</strong></a><br>
<a href="redundancy.html"><strong>Redundant and failover monitoring</strong></a><br>
<a href="flapping.html"><strong>Detection and handling of state flapping</strong></a><br>
<a href="parallelization.html"><strong>Service check parallelization</strong></a><br>
<a href="escalations.html"><strong>Notification escalations</strong></a><br>
<a href="clusters.html"><strong>Monitoring service and host clusters</strong></a><br>
<a href="dependencies.html"><strong>Host and service dependencies</strong></a><br>
<a href="stalking.html"><strong>State stalking</strong></a><br>
<a href="perfdata.html"><strong>Performance data</strong></a><br>
<a href="downtime.html"><strong>Scheduled host and service downtime</strong></a><br>
<a href="embeddedperl.html"><strong>Using the embedded Perl interpreter</strong></a><br>
<a href="adaptive.html"><strong>Adaptive monitoring</strong></a><br>
<a href="templaterecursion.html"><strong>Object inheritance</strong></a><br>
<a href="templatetricks.html"><strong>Time-saving tips for object definitions</strong></a><br>
</ul>

<strong>Integration With Other Software</strong>
<ul>
<a href="int-snmptrap.html"><strong>SNMP Traps</strong></a><br>
<a href="int-tcpwrappers.html"><strong>TCP Wrappers</strong></a><br>
</ul>


<strong>Miscellaneous</strong>
<ul>
<a href="security.html"><strong>Securing Nagios</strong></a><br>
<a href="tuning.html"><strong>Tuning Nagios for maximum performance</strong></a><br>
<a href="nagiostats.html"><strong>Using the nagiostats utility</strong></a><br>
<a href="macros.html"><strong>Using macros in commands</strong></a><br>
<a href="cgis.html"><strong>Information on the CGIs</strong></a><br>
<a href="cgiincludes.html"><strong>Custom CGI headers and footers</strong></a>
</ul>
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